Thermostatic valve



(No Model.) l 2 Sheets-A-Sheet'l.

' J. A. SERRELL 8v M.4 LEITOH.

THERMOSTATIG VALVE.

Attor'ney.

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Patented Maur.v 15

(No Model.) 2 Sheets- Sheet 2, -J. A. SERRELL 8u M. LBITCI-I.

THBRMOSTATIG VALVB. No. 600,653.

Patented Mar. 15, 1898.Y

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Ivn ai. Serre ZZ SATENT FFICEo JOHN A. SERRELL, OF BAYONNE, AND MEREDITH LEITOI-I, OF MERCHANT- VILLE, NElV JERSEY, ASSIGNORS TO THE WARREN WEBSTER 91: OOM- PANY, OF NEW JERSEY.

TH ERNIOSTATIC VALVE.

SPECIFICATION forming part of Letters Patent No. 600,653, dated March 15, 1898. Application iiled February 6, 1897. Serial No. 622,286. (No model.)`

To cir/ZZ whom t may concern.-

Be it known that We, JOHN A. SERRELL, of Bayonne, Hudson county, and MEREDITH LEITCH, of Merchantville, Camden county,

New Jersey, have invented an Improvement in Thermostatic Valves, of which the following is a specification.

Our invention relates to thermostatic valves; and it consists of the improvements which 1o are fully set forth in the following specification and are shown in the accompanying drawings.

It is the object of our invention to provide a thermostatic valve of improved construction I 5 for discharging air, water, and vapor from heaters, coils, and radiators while preventing the escape of steam therefrom, and especially a valve adapted for use in a vacuum system in which the air and water are drawn out of zo the heaters, coils, and radiators by means of a partial vacuum.

It is also an object of our invention to prorect the expanding piece or member from the direct action of the steam at high tempera- 2 5 ture and pressure, so that it will be less liable to injury and will be more durable. This we accomplish by locating the expanding piece on the suction side in a chamber or compartment in which a partial vacuum is maintained, so that the steam which comes in contact with the expanding piece and operates it will have a low temperature and pressure.

It is also an object of our invention to enable the expanding piece to be reversed and 3 5 the other end used should one end become worn or injured.

It is also an object of our invention to render the operation of the valve quick and sensitive, .and to this end we locate the expanding piece in a vacuum chamber or compartment, with its end arranged to expand against the flow of the air and water, whereby the pressure of the latter against the end of the expanding piece tends to open it.

It is also an object of our invention to provide a construction of thermostatic parts which may readily be applied to an ordinary standard globe or angle valve body to transform the same from a hand-valve to a ther- 5o mostatic valve and to enable these parts to valve.

be easily and quickly removed to permit the valve-body to be blown out or cleaned.

Our invention also includes various combinations of parts, which are hereinafter more fully described and claimed.

WVe shall now refer to the accompanying drawings for the purpose of particularly describing our invention.

Figure 1 is a vertical sectional View of a thermostatic valve embodying our invention. 6o Fig. 2 is a similar view of the valve-seat piece, showing the expanding member closed on the valve-seat. Fig. 3 is a horizontal sectional view on the line c of Fig. 2; and Fig. iis a vertical sectional View similar to Fig. 1, illustrating a modiiication. p

In illustrating our invention We have shown the same embodied in an ordinary valve-body and employing a composition expanding `piece or member; but the particular construction 7o of the valve-body, as well as the character of the expanding piece, or Whether it be composition or metallic, is not material to our invention. y

A is the valve-body, which we have shown in full lines as a globe-valve and in dotted lines as an angle-valve.

B is the valve-bonnet.

O is the expandingmember, which is of any convenient character and composed of any 8o suitable material adapted to expand when subjected to the temperature of steam..

D is the valve-seat piece, which preferably consists of a metal bushing adapted to fit in the seat d of the valve-body, being thus adapted to be fitted in the seat of an ordinary hand- VVe have shown the bushing lD provided with a flange c, adapted to rest upon the seat CZ. The valve-seat D is provided with one or more inlet passage-ways e f and one 9o or more independent outlet passage-ways g.

As shown, the piece D is provided with one or more transverse passage-wayse and with a main vertical passage-way f, communicating therewith, but not extending through the bot-tom of the piece D, and also with one or more vertical outlet passage-ways g, extending entirely through. In the drawings we.l

have shown the passage-way f in the center, with four transverse passage-ways e extendroo ing radially from it and four vertical passage-Ways g about the central passage-way f. These passage-ways g do not communicate directly with the passage-ways e, but form independent outlets.

The expanding piece C is arranged over the seat F, through which the passage-way f opens,and is so arranged that it will close upon the seat F and passage-ways e f without closing the vertical passage-ways g. For this purpose we have shown the metal forming the seat F slightly elevated.

G is a partition forming a closed space or chamber I within the valve-body, into which the passage-ways e, f, and g lead. It is shown as a casing surrounding the expanding piece C and extending from the upper portion of the valve-seat piece D above the passageways e up into the bonnet B, where it fits closely as against the internal flange b, so as to divide the space within the upper portion of the valve-body into an outer space or compartment H and the inner space or compartment l about the expanding piece, closed from the compartment l-I, except through the valve passageway e f. In our preferred construction this dividing partit-ion or casing G consists of a thin brass tube open at the top and soldered at the bottom to the upper portion of the piece D.

J is a perforated screen surrounding the seat-piece D and casing G. In our preferred construction the screen ts loosely at the bottom about the flange c and is spun over at the top, as at j, so that when the bonnet, seat-piece, and casing G are lifted the screen J will be carried with them, as the spun-over top j will engage the flange c.

The casing G forms a connection between the seat-piece D and the bonnet B, so that when the bonnet is removed the seat-piece will be removed with it.

We have shown the expanding piece C fastened at its upper end in an adjustable plug K in the internally-threaded end of the bonnet B. Under certain conditions the piece C may, however, be loosely supported within the bonnet, as will be hereinafter more fully described.

L is a cap in the end of the bonnet.

The steam, air, and water of condensation enter the valve from the right-hand side in Fig. l, and while air or waterv is present the piece C is contracted and lifted off the seat F, and the air and water pass thron gh the passage-ways e f and out through the passageways g into the lower portion of the valve. When, however, steam enters the valve, it causes the expanding piece C to expand and close upon the seat F, so as to close the passage-way fto the escape of steam. It will be observed that the expanding piece is so located that its expansion takes place in a direction against the flow of the water and vapor.

When the valve is used in avacuum system, in which a partial vacuum is created in the discharge side of the valve, the vacuum thus created extends at all times through the passage-ways g into the space or compartment I, which surrounds the expanding piece. The expanding piece is thus constantly maintained in a vacuum-chamber, and from this it results that when the valve passage-ways ef is open during the escape of air and water and the steam enters the chamber or space I it will flow into a partial vacuum and will exist at a lower temperature, so that the expandin g piece may be made to work at a lower temperature than 212O and, being subjected to lower temperature and pressure, Will not be so liable to injury and will be more durable.

A further advantage of the location of the expanding piece on the suction side instead of on the pressure side of the valve is that as the pressure, acting on the base of the expanding piece through the passage-way f against a partial vacuum in the chamber l, will act to lift the piece C and open the valve the piece C .may be loose in the bonnet B or plug K, as shown in Fig. 4, instead of being fastened therein, as is now necessary. The

`valve will be held open by the pressure upon the base of the expanding piece until the steam expands the piece C, and this pressure will act to instantly open the valve when the piece C contracts.- In this way the valve is made very sensitive and positive in its actions.

A further advantage of this construction is that the expanding piece may be at any time reversed to use the opposite end when one end has become worn or injured. This is particularly advantageous where vulcanite-composition expanding pieces are used.

When it is desired to clean the valve, the bonnet B is unscrewed and lifted out, and with it are lifted the valve-seat piece D, casing G, screen J, and expanding piece C, leaving the largev opening d inthe valve-body through which any sediment may be easily blown out of the valve.

. The details of construction which we have shown for the purpose of illustration may be Varied without departing from our invention.

What we claim as new, and desire to secure by Letters Patent, is-

1. A thermostatic valve, embracing a valvebody, divided internally into two compartments and having a valve-seat in the dividing-wall, a thermostatic expanding piece, and a surrounding casing independent of the expanding piece and unconnected therewith located within one of the compartments and surrounding the expanding piece.

2. A thermostatic valve, embracing a valvebody divided internally into two compartments and having a valve-seat in the dividing-wall, one of said compartments being further divided into two internal chambers communicating with one another only through the passage-way of the valve-piece, and a thermostatic expanding piece located in the internal chamber of one of said compartments IOO IIO

on the discharge side of the communicating passage-Way in the valve-seat.

3. A thermostatic valve, embracing a valvebody divided internally into two compartments and having a valve-seat in the dividing-Wall, an internal closed chamber Within one of said compartments having passage- Ways leading into it from the two compartments respectively, andathermostatic valvepiece controlling one of said passage-Ways only.

4L. In athermostatic valve, the combination With the main body divided internally into two compartments, of a dividing-partition Within one of said compartments forming in it an internal chamber, a valve-seat piece having an inlet passage-Way leading from one of the compartments into which the body is divided to the internal chamber, and an outlet passage-Way leading from the internal chamber to the other compartment, and a thermostatic valvepiece located in said internal chamber and controlling only the inlet passage-Way from one of the compartments toy the internal chamber.

5. In a thermostatic valve, the combination with the main body, of a valve-seatv piece having inlet passage-Ways e, f, and an independent outlet passage-Way g, a casing G extending from the valve-seat piece beyond the inlet e and forming a closed compartment, and an expanding piece located in the closed compartment and controlling the passage- Ways cf. y

6. In a therm ostatic valve, the combination With the main body, of a dividing-partition G Within the main body forming an internal closed compartment, a valve-seat piece having a series of inlet-openings c, a main opening f leading therefrom into the closed compartment and an independent outlet from the compartment, and an expanding piece Within the compartment controlling the main openinef- 7. In a thermostatic valve, the combination with the main body, of a dividing-partition G Within the main body forming an internal closed compartment,a val ve-seat piece having 9. A valve structure for a thermostatic valve consisting of the main body having a seat d, a removable cap or bonnet, a valveseat piece D fitting the seat d and provided with passage-Ways e, fand g, and a casing G connected at one end with the valve -seat piece D and at the other With the bonnet and forming an internal closed compartment I.

10. AV valve structure for a thermostatic valve consisting of the main body having a seat d, a removable cap or bonnet, a valveseat piece D fitting the seat d and provided with passage-Ways e, f and g, and a casing G connected at one end with the valve-seat piece D and at the other with the bonnet and forming an internal closed compartment I, and the perforated screen surrounding the valve-seat piece D.

1l. A valve structure for a tlierniostati'c valve embracing the main body, an internal partition G forming an internal closed compartment `Within the main body, and a valveseat piece D having passage-Ways e f leading into the closed compartment formed by the partition G, and an independent outlet passage-Way g leading therefrom.

In testimony of Which invention We hereunto set our hands.

JOHN A. sERRELL.. MEREDITH LErroi-i.

Witnesses:

WM. A. JONES, Jr., FREDERIC CARRAGAN. 

